All too often, photography tutorials begin with the exposure triangle: aperture, shutter speed, and ISO. While those three variables are the core of every photo, there’s one technical skill that everyone should master first: how to accurately focus on a subject. I begin with this skill in every class and lesson that I teach. And every time, I see eyes light up with that “Ah-ha!” feeling. Most new camera users just trust the camera to focus for them right out of the box. But I